Fix terminology of snapshot saving in literals and main

In case of literals and in main, snapshot saving is incorrectly
named dumping. Elsewhere in the code, 'dump' functions output debug
data (even literals have a `lit_dump_literals` debug function). To
help distinction and to align terminologies, snapshot saving
functions of literals and command line options of main are also
re-named 'save'.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

jerry-core/jerry.c

@@ -2045,7 +2045,7 @@ jerry_parse_and_save_snapshot (const jerry_api_char_t *source_p, /**< script sou
                                size_t source_size, /**< script source size */
                                bool is_for_global, /**< snapshot would be executed as global (true)
                                                     *   or eval (false) */
-                               uint8_t *buffer_p, /**< buffer to dump snapshot to */
+                               uint8_t *buffer_p, /**< buffer to save snapshot to */
                                size_t buffer_size) /**< the buffer's size */
 {
 #ifdef JERRY_ENABLE_SNAPSHOT_SAVE
@@ -2101,7 +2101,7 @@ jerry_parse_and_save_snapshot (const jerry_api_char_t *source_p, /**< script sou
   lit_mem_to_snapshot_id_map_entry_t *lit_map_p = NULL;
   uint32_t literals_num;
 
-  if (!lit_dump_literals_for_snapshot (buffer_p,
+  if (!lit_save_literals_for_snapshot (buffer_p,
                                        buffer_size,
                                        &snapshot_buffer_write_offset,
                                        &lit_map_p,